Note 5 - Loans and Leases - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Notes receivable, gross	$ 1,631,549	$ 1,565,920
Real Estate [Member]
Notes receivable, gross	2,763
Other Collateral [Member]
Notes receivable, gross	730
Collateral Pledged [Member]
Notes receivable, gross	3,493
Commercial Portfolio Segment [Member] | Commercial [Member]
Notes receivable, gross	135,164	141,122
Commercial Portfolio Segment [Member] | Commercial [Member] | Real Estate [Member]
Notes receivable, gross	0
Commercial Portfolio Segment [Member] | Commercial [Member] | Other Collateral [Member]
Notes receivable, gross	636
Commercial Portfolio Segment [Member] | Commercial [Member] | Collateral Pledged [Member]
Notes receivable, gross	636
Commercial Portfolio Segment [Member] | Municipal [Member]
Notes receivable, gross	77,018	72,996
Commercial Portfolio Segment [Member] | Municipal [Member] | Real Estate [Member]
Notes receivable, gross	0
Commercial Portfolio Segment [Member] | Municipal [Member] | Other Collateral [Member]
Notes receivable, gross	0
Commercial Portfolio Segment [Member] | Municipal [Member] | Collateral Pledged [Member]
Notes receivable, gross	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Notes receivable, gross	314,838	318,296
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	167
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Other Collateral [Member]
Notes receivable, gross	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Collateral Pledged [Member]
Notes receivable, gross	167
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Notes receivable, gross	294,718	284,677
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	2,138
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Other Collateral [Member]
Notes receivable, gross	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Collateral Pledged [Member]
Notes receivable, gross	2,138
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Notes receivable, gross	58,623	59,118
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Real Estate [Member]
Notes receivable, gross	102
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	102
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Notes receivable, gross	52,501	52,568
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Real Estate [Member]
Notes receivable, gross	90
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Collateral Pledged [Member]
Notes receivable, gross	90
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Recourse [Member]
Notes receivable, gross	11,924	12,929
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonrecourse [Member]
Notes receivable, gross	121,230	114,909
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Real Estate [Member] | Recourse [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Real Estate [Member] | Nonrecourse [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Other Collateral [Member] | Recourse [Member]
Notes receivable, gross	9
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Other Collateral [Member] | Nonrecourse [Member]
Notes receivable, gross	84
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Recourse [Member]
Notes receivable, gross	9
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Nonrecourse [Member]
Notes receivable, gross	84
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member]
Notes receivable, gross	34,691	33,223
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Real Estate [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Collateral Pledged [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Other Loan [Member]
Notes receivable, gross	13,882	11,709
Consumer Portfolio Segment [Member] | Other Loan [Member] | Real Estate [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Other Loan [Member] | Other Collateral [Member]
Notes receivable, gross	1
Consumer Portfolio Segment [Member] | Other Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	1
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Notes receivable, gross	429,816	$ 398,136
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Real Estate [Member]
Notes receivable, gross	266
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Other Collateral [Member]
Notes receivable, gross	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	$ 266